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/*
* Copyright (C) 2013 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _LVM_PROP_COMMON_H
#define _LVM_PROP_COMMON_H
#include <stdint.h>
#include "lib.h" /* HM FIXME: REMOVEME: */
/*
* Common code for getting and setting properties.
*/
struct lvm_property_type {
unsigned type;
const char *id;
unsigned is_settable:1;
unsigned is_string:1;
unsigned is_integer:1;
unsigned is_signed:1;
union {
const char *string;
uint64_t integer;
int64_t signed_integer;
} value;
int (*get) (const void *obj, struct lvm_property_type *prop);
int (*set) (void *obj, struct lvm_property_type *prop);
};
int prop_not_implemented_get(const void *obj, struct lvm_property_type *prop);
int prop_not_implemented_set(void *obj, struct lvm_property_type *prop);
int prop_get_property(struct lvm_property_type *p, const void *obj,
struct lvm_property_type *prop,
unsigned type);
int prop_set_property(struct lvm_property_type *p, void *obj,
struct lvm_property_type *prop,
unsigned type);
#define GET_NUM_PROPERTY_FN(NAME, VALUE, TYPE, VAR) \
static int _ ## NAME ## _get (const void *obj, struct lvm_property_type *prop) \
{ \
const struct TYPE *VAR = (const struct TYPE *)obj; \
\
PFLA("%s", "Huhu!!!") \
prop->value.integer = VALUE; \
return 1; \
}
#define SET_NUM_PROPERTY_FN(NAME, SETFN, TYPE, VAR) \
static int _ ## NAME ## _set (void *obj, struct lvm_property_type *prop) \
{ \
struct TYPE *VAR = (struct TYPE *)obj; \
\
SETFN(VAR, prop->value.integer); \
return 1; \
}
#define SET_NUM_PROPERTY(NAME, VALUE, TYPE, VAR) \
static int _ ## NAME ## _set (void *obj, struct lvm_property_type *prop) \
{ \
struct TYPE *VAR = (struct TYPE *)obj; \
\
VALUE = prop->value.integer; \
return 1; \
}
#define GET_STR_PROPERTY_FN(NAME, VALUE, TYPE, VAR) \
static int _ ## NAME ## _get (const void *obj, struct lvm_property_type *prop) \
{ \
const struct TYPE *VAR = (const struct TYPE *)obj; \
\
prop->value.string = (char *)VALUE; \
return 1; \
}
/*
* The 'FIELD' macro arguments are defined as follows:
* 1. report_type. An enum value that selects a specific
* struct dm_report_object_type in the _report_types array. The value is
* used to select the containing base object address (see *obj_get*
* functions) for any data values of any field in the report.
* 2. Containing struct. The structure that either contains the field data
* as a member or should be used to obtain the field data. The containing
* struct should match the base object of the report_type.
* 3. Field type. This must be either 'STR' or 'NUM'.
* 4. Report heading. This is the field heading that is displayed by the
* reporting commands.
* 5. Data value pointer. This argument is always a member of the
* containing struct. It may point directly to the data value (for example,
* lv_uuid - see _uuid_disp()) or may be used to derive the data value (for
* example, seg_count - see _lvsegcount_disp()). In the FIELD macro
* definition, it is used in an offset calculation to derive the offset to
* the data value from the containing struct base address. Note that in some
* cases, the argument is the first member of the struct, in which case the
* data value pointer points to the start of the struct itself (for example,
* 'lvid' field of struct 'lv').
* 6. Minimum display width. This is the minimum width used to display
* the field value, typically matching the width of the column heading.
* 7. Display function identifier. Used to derive the full name of the
* function that displays this field. Derivation is done by appending '_'
* then prepending this argument to '_disp'. For example, if this argument
* is 'uuid', the display function is _uuid_disp(). Adding a new field may
* require defining a new display function (for example _myfieldname_disp()),
* or re-use of an existing one (for example, _uint32_disp()).
* 8. Unique format identifier / field id. This name must be unique and is
* used to select fields via '-o' in the reporting commands (pvs/vgs/lvs).
* The string used to specify the field - the 'id' member of
* struct dm_report_field_type.
* 9. Description of field. This is a brief (ideally <= 52 chars) description
* of the field used in the reporting commands.
* 10. Flags.
* FIELD_MODIFIABLE. A '_set' function exists to change the field's value.
* The function name is derived in a similar way to item 7 above.
*/
#define STR 1
#define NUM 2
#define BIN 3
#define SIZ 4
#define PCT 5
#define TIM 6
#define SNUM 7 /* Signed Number */
#define STR_LIST 8
#define FIELD_MODIFIABLE 0x00000001
#define FIELD(type, strct, field_type, head, field, width, fn, id, desc, settable) \
{ type, #id, settable, (field_type == STR || field_type == STR_LIST), ((field_type == NUM) || (field_type == BIN) || (field_type == SIZ) || (field_type == PCT) || (field_type == SNUM)), ((field_type == SNUM) || (field_type == PCT)), { .integer = 0 }, _ ## id ## _get, _ ## id ## _set },
#endif
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